MikroTik S-RJ01 RJ45 SFP Copper Module

When it comes to building a high-performance and flexible network, every small component matters—especially the ones that bridge critical gaps in your infrastructure. One such small but mighty device is the MikroTik S-RJ01 RJ45 SFP Copper Module. Designed to convert SFP ports into standard RJ45 Ethernet ports, this tiny module provides enormous flexibility and cost savings for businesses, data centers, and networking enthusiasts.

Whether you’re upgrading your existing MikroTik setup (on your MikroTik Router or Switch) or planning a new deployment, the S-RJ01 can help you avoid buying expensive fiber optics when you don’t need them. In this article, we’ll take a deep dive into what makes the MikroTik S-RJ01 a smart investment, how it compares to similar modules, and why it’s a must-have for any serious network admin.

MikroTik S-RJ01 RJ45 SFP Copper Module

The MikroTik S-RJ01 is part of MikroTik’s extensive line of SFP modules, offering seamless connectivity options across both fiber and copper networks. This specific model is a 1.25G SFP-to-RJ45 transceiver, allowing you to connect standard Ethernet cables (Cat5e, Cat6, etc.) directly to an SFP port on MikroTik routers, switches, or other networking hardware.

It supports Gigabit Ethernet speeds up to 100 meters, making it perfect for short-distance high-speed connections. One of the reasons this module is so widely loved is its plug-and-play nature—no configuration required, just insert and go.

What makes this model even more impressive is its compatibility. While it’s optimized for MikroTik products, it also works with many third-party devices that support SFP modules. So, if you’re looking for versatility, performance, and affordability, the S-RJ01 hits the mark.

Key Features of the MikroTik S-RJ01

Let’s break down the standout features that make the MikroTik S-RJ01 SFP Module such a reliable addition to any network setup:

• 1.25 Gbps Data Rate – Delivers fast, stable Ethernet connections up to 100 meters.
• RJ45 Copper Connector – Standard Ethernet port allows flexible integration with existing cabling.
• SFP Form Factor – Easily fits into any SFP cage on compatible MikroTik or third-party devices.
• Wide Compatibility – Works with most MikroTik devices and many non-MikroTik brands that support SFP.
• Hot-Pluggable – No need to power down your system to install or replace.
• Cost-Effective – A budget-friendly alternative to fiber optic SFP modules.
• Compact & Durable – Built for tight spaces and long-term use.

Benefits of Using the S-RJ01 in Your Network

Aside from technical features, here are some practical reasons you’ll love having this module in your toolkit:

• Saves Money: Skip expensive fiber transceivers and fiber cabling for short distances.
• Easy Setup: Truly plug-and-play, even for beginners.
• Flexible Deployment: Great for extending ports, connecting additional switches, or temporarily converting a port to Ethernet.
• No Configuration Hassles: It automatically negotiates connection speed—no CLI headaches.
• Ideal for Business and Home Labs: Whether you’re managing an enterprise-grade network or tinkering in your homelab, this module adapts.

Common Use Cases for the MikroTik S-RJ01

The S-RJ01 isn’t just a neat accessory—it’s a game-changer for scenarios like:

• Connecting MikroTik Cloud Core Router’s SFP port directly to a standard Ethernet switch
• Adding Ethernet support to a fiber-only switch temporarily
• Bridging multiple MikroTik routers using Cat6 cables without needing fiber optic gear
• Lab testing or network simulation environments

If you’re working with limited fiber infrastructure, this little module can be your workaround hero.

How the S-RJ01 Helps Optimize Port Usage

If you have a switch or router with multiple SFP ports but limited Ethernet, the S-RJ01 becomes an incredibly smart tool. Instead of investing in a new switch, you can just convert unused SFP ports into usable Gigabit Ethernet ports. It’s a low-cost solution to high-cost problems—especially in growing businesses where hardware upgrades need to be strategic.

Why IT Professionals Love the MikroTik SFP Ecosystem

The MikroTik SFP product family is trusted by IT professionals around the world for three reasons: reliability, affordability, and compatibility. Whether you’re using fiber or copper, their SFP modules integrate smoothly with MikroTik switches, routers, and other network appliances. The S-RJ01 fits perfectly into this ecosystem, giving users seamless connectivity and reducing the need for multiple brands or expensive solutions.

Comparison with Similar MikroTik Modules

The S-RJ01 is perfect if you’re not working with 10G networks yet or just need solid, fast Gigabit connectivity over copper.

Technical Specifications

Frequently Asked Questions (FAQ)

1. What is the MikroTik S-RJ01 used for?
It’s used to convert an SFP port into a standard RJ45 Ethernet port for Gigabit connections.

2. Can I use the S-RJ01 with non-MikroTik devices?
Yes, it’s compatible with many third-party brands that support SFP modules.

3. Does it support 10Gbps speeds?
No, the S RJ01 supports up to 1.25 Gbps. For 10G, use the MikroTik S+RJ10.

4. What’s the max cable length?
Up to 100 meters using high-quality Cat5e or Cat6 cables.

5. Is it plug-and-play?
Absolutely. No configuration is required.

6. Can I use it in a data center?
Yes, especially for short-range copper connections within racks or between switches.

7. Is the S-RJ01 suitable for outdoor use?
It’s not designed for outdoor environments unless housed in a weatherproof enclosure.

8. Does ITMan sell this product?
Yes! You can find the MikroTik S-RJ01 at the best price on ITMan.

9. What’s the difference between S-RJ01 and fiber SFP modules?
S-RJ01 uses copper (Ethernet), while fiber modules use optical cables. S-RJ01 is cheaper and ideal for short-distance links.

10. How do I install the S-RJ01?
Simply insert it into an available SFP port. The device should automatically detect it.

Final Thoughts

The MikroTik S-RJ01 SFP Module proves that size doesn’t define power. Compact, cost-effective, and incredibly useful, it helps you get the most out of your networking gear without blowing your budget. Whether you’re in a business environment, a data center, or setting up your own lab, this little module can save you time, money, and hassle.

Ready to boost your network’s flexibility? Get the best price for the MikroTik S-RJ01 right now on ITMan – your trusted source for genuine MikroTik hardware.